package main

import "fmt"
import "os"
import "time"

func main() {
	var s, sep string
	//var three int
	for i := 0; i < len(os.Args); i++ {
		s += sep + os.Args[i]
		sep = ""
		//	three:=0;
	}
	fmt.Printf(s)
	for i := 0; i < 100; i++ {

	}
	//var num int
	//t1 := time.Now() // get current time
	//for{
	//	num++;
	//	fmt.Printf("%d \n",num)
	//	elapsed := time.Since(t1)
	//	if(elapsed>1000000000){
	//		fmt.Println("App elapsed: ", elapsed)
	//		break
	//	}
	//
	//}
	start := time.Now() // get current time
	sum := 0
	for i := 0; i < 10000000; i++ {
		sum += i
	}

	consuming := time.Since(start)
	fmt.Printf("\n耗时：%d \n", consuming.Nanoseconds())
	fmt.Printf("sum:%d", sum)
	fmt.Printf("sum:%d", time.Now().UnixNano()/1e6)

}
